XFX PVT84JUDF3 GeForce 8600GT 256MB GDDR3 PCI Express x16 SLI Ready Video Card (Dual DVI/S-Video) SLI-Ready video card with 256 MB of 128-bit DDR2 memory Full support for Microsoft DirectX 10.0 Shader Model 4.0 128-bit floating point High Dynamic-Range (HDR) for incredibly realistic lighting effects NVIDIA SLI Technology allows two graphics cards to run simultaneously Dual Link DVI for high resolution monitors (up to 2560x1600)